When you do strength training, your calf muscle (specifically the inner part of the gastrocnemius) grows just as much as your thigh muscles (quadriceps) do.

When you do strength training, your calf muscles (specifically the two parts of the gastrocnemius) get bigger, and they grow about as much as your chest muscles do.

When you do strength training, your calf muscle (gastrocnemius) grows just as much in size as your thigh muscle (quadriceps), both in absolute terms and compared to how big they were before.

The calf muscle that helps you push off when you run or jump (gastrocnemius) grows bigger with weight training better than the deeper calf muscle (soleus), because it has more types of muscle fibers that respond well to exercise.

When you do resistance training, different parts of the same muscle group don't grow at the same rate. For example, the outer calf muscle tends to get bigger faster than the inner calf and deeper calf muscles, which suggests that how muscles are naturally built and activated matters more for growth than the exact workout routine you follow.

Doing calf raises with your knees bent for 12 weeks doesn't seem to build much calf muscle, even if you train just as hard as you would for other muscles. This suggests that working your calves while they're shortened might not be the best way to make them grow.